The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 06, 2018
Filed:
Nov. 30, 2017
The United States of America As Represented BY the Secretary of the Navy, Washington, DC (US);
Carlos M. Torres, Jr., San Diego, CA (US);
James R. Adleman, San Diego, CA (US);
Ryan P. Lu, San Diego, CA (US);
Kang L. Wang, Santa Monica, CA (US);
THE UNITED STATES OF AMERICA AS REPRESENTED BY THE SECRETARY OF THE NAVY, Washington, DC (US);
Abstract
A device includes a substrate with a tunnel barrier disposed on active region defined on the substrate, a monolayer of graphene disposed on the tunnel barrier, a dielectric material disposed on the graphene, and an electrode disposed over a region of the dielectric material. A first voltage is applied across the electrode and the graphene to adjust a Fermi level within the graphene to a Fermi level position within the valence band of the graphene based upon a predetermined emission wavelength. A current is injected into the graphene's conduction band to cause the graphene to emit a broadband hot electron luminescence (HEL) spectrum of photons peaked at the predetermined emission wavelength. The device may be configured as a vertical-tunneling light-emitting hot-electron transistor. The broadband HEL photon emission spectrum emanating from the graphene may be voltage-tunable within the electromagnetic spectrum from UV to THz.